Heavy Duty Heat Recovery Rooftop Packaged Unit

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Improvement of indoor air quality is one of the significant missions of air conditioner. To bring the encompassing natural air into the structure is a biological and powerful arrangement which is obligatory to control indoor CO2 level and solace. Amrta air to air HR system offers a parfait energy recovery solution by absorbing heat from the fumes air so as to pre-treat the fresh air to achieve at the same time:

- An high performance of the improvement of indoor air quality and comfort. 

- An economical operation for remarkable energy saving. 

Two types of HR gear are accessible as indicated by the venture necessity: Plate heat exchanger or Wheel heat exchanger. Despite the fact that the utilization of the HR framework perhaps increment some of vitality utilization of fans, however the advantage of vitality sparing will be assurance more noteworthy than that. The test information demonstrate that the presentation of warmth recuperation can be up to 70% for recuperation productivity and 100% for volume of fumes air. 

The HR framework is currently broadly applied in private, business, mechanical applications. Basically, applications which request the greater air and outside air rate are emphatically suggested. 

Structure 

Boards and edge are produced using electrifies steel secured with polyester powder painting to guarantee complete protection from climatic operators. 

Direct development curls with condensate channel plate. 

Hermetic scroll compressor 

High efficiency scroll compressor for the entire range, with built-in thermal overload cut-out and crankcase heater, mounted on rubber vibration dampers. 

Ripple type acoustic insulation for compressor section, and thermal insulation for coil and fan section, low noise. 

Centrifugal fan 

Forward bend radial fans for air treatment area and axial fans for condensation section

Front, side and underside air discharge of the treatment unit. 

High external pressure, long air supply distance. 

Electric board

Electric board comprises of breakers and contactors for blowers and fan engines, stage succession transfer and other important security gadgets for the fundamental parts. 

Easy operation line controller

Cooling/Heating/Auto 

Mistake sign 

Timing on/off 

Optional

Economizer with new, return air dampers and fresh air hood 

Free cooling function for low ambient temperature 

Low ambient control device for operation of outdoor units at ambient temperatures from under 20°C down to - 10°C 

BMS devices

T3 (Tropical climate) 

Roof curb 

Metal/aluminum filter 

100% heat recovery 

Evaporating section: double skin with 50mm polyurethane foam 

Optional water heating coil

Metal or plastic mesh on condenser coil 

Optional supply/return air configurations

Updated plug fan 

G4 filter, plate and bag filter

Heat recovery diagram

Plate heat recovery

                                               Heating mode                                                                                                                                   Recyling mode

                                                   Cooling mode

①Fresh air                ②Return air                ③Supply air                ④Exhaust air  

Wheel heat recovery

 

                                                                                       Heating mode                                                                                                                                                        Recyling mode

                                                                     Cooling mode

①Fresh air                ②Return air                ③Supply air                ④Exhaust air(optional)  

Note: For downflow only, otherwise it will be different structure

Technical Data

Model	Unit	RTU10	RTU12	RTU14	RTU16	RTU20	RTU25	RTU28	RTU32	RTU36	RTU42
Cooling*
Cooling capacity*	kW	10.6	12.1	14.3	16.2	21.2	24.2	28.6	32.4	36.2	41.6
	Ton	3.0	3.5	4.1	4.6	6.1	6.9	8.2	9.3	10.3	11.9
Nominal current*	A	7	7.7	9.3	10	13.4	17.7	18.7	19.5	23.3	25.7
Nominal power input*	kW	3.55	4.17	4.92	5.37	6.75	8.25	9.95	10.5	12.7	13.85
Heating*
Heating capacity*	kW	11.3	12.8	15	17.3	22.6	25.6	30.2	34.6	38	44.6
	Ton	3.2	3.7	4.3	4.9	6.5	7.3	8.6	9.9	10.9	12.7
Nominal current*	A	6.5	7.2	8.6	9.2	12.4	14.3	17.3	18	21.3	23.7
Nominal power input*	kW	3.26	3.83	4.5	5	6.17	7.57	9.1	9.55	11.6	12.65
Power supply	380~415v/3ph/50Hz
Refrigerant charge	Kg	3.2	4.2	5	5.8	7.3	8.4	9.8	10.5	12	13
Compressor
Qty	Nr.	1	1	1	1	2	2	2	2	2	2
Type	Scroll
Air treatment section
Centrifugal fans number	Nr.	1	1	1	1	1	1	1	1	1	1
Drive type	/	Direct drive							Belt drive
Air flow	m3/h	1950	2400	2920	3150	4250	5400	5700	6300	6800	7900
External static pressure	Pa	150	150	180	180	150	235	305	290	270	250
Motor power	kW	0.5	0.5	0.7	0.7	0.7	1.1	1.5	1.5	2.2	2.2
Condensation section
Axial fans number	Nr.	1	1	1	1	1	1	1	1	2	2
Air flow	m3/h	4100	4150	6100	7020	8640	9430	11230	12300	14200	18830
Motor power	kW	0.25	0.37	0.37	0.55	0.45	0.55	0.75	0.75	2*0.37	2*0.37
Dimensions
Length	mm	1350	1350	1350	1350	1820	1820	1820	1820	2540	2540
Width	mm	990	990	990	990	1400	1400	1400	1400	1860	1860
Height	mm	880	880	880	880	1100	1100	1100	1100	1180	1180
Net weight	kg	240	250	260	260	380	430	480	500	780	800
Sound pressure level **	dB(A)	67	68	70	71	72	70	72	72	72	72

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Model	Unit	RTU48	RTU55	RTU64	RTU72	RTU88	RTU104	RTU120	RTU150	RTU170	RTU190
Cooling*
Cooling capacity*	kW	47.2	53.2	63.3	71.4	87.2	103.3	118.8	153.4	168.6	188.5
	Ton	13.5	15.2	18.1	20.4	24.9	29.5	33.9	43.8	48.1	53.9
Nominal current*	A	31.3	32.5	37	45.5	53	68.7	79.7	88.5	113.8	135.3
Nominal power input*	kW	16.4	18.7	21.5	26.5	30.6	39.8	46	55	65.8	78.3
Heating*
Heating capacity*	kW	50.2	56.4	67	75.6	93.3	110.5	126.8	164.3	182	202
	Ton	14.3	16.1	19.1	21.6	26.7	31.6	36.2	46.9	52	57.7
Nominal current*	A	29	30.3	34.3	42	47.2	62.3	74.2	84.6	102.5	124.8
Nominal power input*	kW	15	17	19	24.1	27.3	36	43	49	59.3	72.2
Power supply	380~415V/3Ph/50Hz
Refrigerant charge	Kg	13.5	15.2	18.1	20.4	24.9	29.5	34	43.8	48	54
Compressor
Qty	Nr.	2	2	2	2	2	4	4	4	4	4
Type	Scroll
Air treatment section
Centrifugal fans number	Nr.	1	1	1	1	1	1	1	1	1	1
Drive type	/	Belt drive
Air flow	m3/h	9350	10450	11700	14400	16600	19940	22000	29000	31400	34900
External static pressure	Pa	290	280	275	380	345	390	390	360	420	430
Motor power	kW	2.2	3	3	4	4	5.5	7.5	7.5	11	15
Condensation section
Axial fans number	Nr.	2	2	2	2	2	4	4	4	4	4
Air flow	m3/h	19200	21420	24620	28400	37500	43680	49200	67500	72000	84000
Motor power	kW	2*0.55	2*0.55	2*0.75	2*0.75	2*1.1	4*0.75	4*0.75	4*1.1	4*1.5	4*2.2
Dimensions
Length	mm	2540	2540	3090	3400	3400	4700	4700	5200	5800	5800
Width	mm	1860	1860	2200	2200	2200	2240	2240	2240	2240	2240
Height	mm	1180	1430	1430	1590	1590	1650	1650	1650	1650	1650
Net weight	kg	830	850	1200	1400	1500	1700	1750	2300	2500	2500
Sound pressure level **	dB(A)	75	73	75	75	75	75	80	80	82	84

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* Performance values refer to the following conditions:

Cooling: room air temperature 27.0°C DB RH 50%, ambient air temperature 35°C.

Heating: room air temperature 21.0°C DB, ambient air temperature 7°C DB / 6°C WB.

** Noise level measured by adopting average value in the noise lab with background noise of 25 dB(A), at a distance of 1.5m high fan speed.